/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.dromara.hmily.springcloud.parameter;

import org.dromara.hmily.common.utils.LogUtil;
import org.dromara.hmily.core.context.HmilyTransactionContext;
import org.dromara.hmily.core.mediator.RpcMediator;
import org.dromara.hmily.core.mediator.RpcParameterLoader;
import org.dromara.hmily.spi.HmilySPI;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

/**
 * The type springCloud parameter loader.
 *
 * @author xiaoyu
 */
@HmilySPI(value = "springCloud")
public class SpringCloudParameterLoader implements RpcParameterLoader {
    
    private static final Logger LOGGER = LoggerFactory.getLogger(SpringCloudParameterLoader.class);
    
    @Override
    public HmilyTransactionContext load() {
        HmilyTransactionContext hmilyTransactionContext = null;
        try {
            final RequestAttributes requestAttributes = RequestContextHolder.currentRequestAttributes();
            hmilyTransactionContext = RpcMediator.getInstance().acquire(key -> ((ServletRequestAttributes) requestAttributes).getRequest().getHeader(key));
        } catch (IllegalStateException ex) {
            LogUtil.warn(LOGGER, () -> "can not acquire request info:" + ex.getLocalizedMessage());
        }
        return hmilyTransactionContext;
    }
}
